Steam locomotive - a biological experience.

Imagine a lump of steal. Tons of steel. Dead steal. Fill it with water and coal. Put on a fire. Suddenly the dead steal comes alive. It ejects steam and sounds reminiscent of an animal. It evolves tremendous power and can drag wagons after wagons. Imagine that people travelled with these "monsters" for about 100 years. Try to catch the feeling of a real steal monster!